In this Thursday, April 16, 2015, photo, members of the Sudanese security forces guard the historic Meroe pyramids in al-Bagrawiya, 200 kilometers (125 miles) north of Khartoum, Sudan. The pyramids at Meroe are deserted despite being a UNESCO World Heritage site like those at Giza in Egypt. (AP Photo/Mosa'ab Elshamy) (The Associated Press)

In this Thursday, April 16, 2015 photo, tour guides wait for tourists to offer them camel rides at the historic Meroe pyramids in al-Bagrawiya, 200 kilometers (125 miles) north of Khartoum, Sudan. The pyramids at Meroe are deserted despite being a UNESCO World Heritage site like those at Giza in Egy...